[Win, Linux] Always display the avatar button text at the same size.

chrome/browser/ui/views/profiles/new_avatar_button.cc

Index: chrome/browser/ui/views/profiles/new_avatar_button.cc
diff --git a/chrome/browser/ui/views/profiles/new_avatar_button.cc b/chrome/browser/ui/views/profiles/new_avatar_button.cc
index 99a62030508db329d3e8417a9fcc0b35cf0dbeee..660638baaed264130b5dbbd568721a84808b52ed 100644
--- a/chrome/browser/ui/views/profiles/new_avatar_button.cc
+++ b/chrome/browser/ui/views/profiles/new_avatar_button.cc
@@ -18,6 +18,8 @@
 
 namespace {
 
+const int kDisplayFontHeight = 15;
+
 scoped_ptr<views::Border> CreateBorder(const int normal_image_set[],
                                        const int hot_image_set[],
                                        const int pushed_image_set[]) {
@@ -59,6 +61,9 @@ NewAvatarButton::NewAvatarButton(
       gfx::ShadowValue(gfx::Point(), 1.0f, SK_ColorDKGRAY)));
   SetTextSubpixelRenderingEnabled(false);
 
+  // Shrink large fonts to make them fit.
+  SetFontList(GetFontList().DeriveWithHeightUpperBound(kDisplayFontHeight));
+
   ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
   if (button_style == THEMED_BUTTON) {
     const int kNormalImageSet[] = IMAGE_GRID(IDR_AVATAR_THEMED_BUTTON_NORMAL);